Diseño de un receptor de "Wake-Up" para WSN basado en la Arquitectura "UNCERTAIN-IF"

Abstract

This paper presents an 868 MHz wake-up radio using uncertain-IF architecture for wireless sensor network. It is designed to receive data modulated with on-off-keying in UMC 65nm CMOS technology and employs uncertain-IF architecture to reduce the oscillator design constraints and reduce power consumption. The wake-up radio consists of a single-ended dual-gate mixer, a five stage IF-amplifier and a differential envelope detector biased in weak inversion. The wake-up radio has been designed with a trade-off between sensitivity and power consumption The obtained sensitivity and power consumption is -78 dBm and 46.8 ?W, respectively, with 1.2 V power supply.